PLYMOUTH, Minn. (AP) - Authorities have seized a shipment of marijuana worth about $750,000 following a surveillance operation in Plymouth.

Law enforcement in South Dakota contacted the Plymouth Police Department on Monday to alert local authorities the load was heading there.

Plymouth Police Capt. Jeff Swiatkiewicz says drug investigators and officers set up surveillance of the marijuana's transfer in a parking lot. Police arrested two brothers from Independence after they drove off in a pick-up truck filled with 200 pounds of marijuana.

They're expected to be charged Wednesday. The person who drove the marijuana from South Dakota to Minnesota hasn't been arrested.